131012404 has 12 divisors (see below), whose sum is σ = 242758404. Its totient is φ = 61652864.

The previous prime is 131012389. The next prime is 131012419. The reversal of 131012404 is 404210131.

It is an interprime number because it is at equal distance from previous prime (131012389) and next prime (131012419).

It can be written as a sum of positive squares in 2 ways, for example, as 42276004 + 88736400 = 6502^2 + 9420^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963259 + ... + 963394.

It is an arithmetic number, because the mean of its divisors is an integer number (20229867).

Almost surely, 2^131012404 is an apocalyptic number.

It is an amenable number.

131012404 is a deficient number, since it is larger than the sum of its proper divisors (111746000).

131012404 is a wasteful number, since it uses less digits than its factorization.

131012404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926674 (or 1926672 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 131012404 is about 11446.0650006891. The cubic root of 131012404 is about 507.8913370410.

Adding to 131012404 its reverse (404210131), we get a palindrome (535222535).

The spelling of 131012404 in words is "one hundred thirty-one million, twelve thousand, four hundred four".